function validate()
{
 emailReg =/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*\.(\w{2}|(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum))$/; 
 
 if(document.frm.textfield.value=="")
 
  {
     alert("Please enter your  name");
	   document.frm.textfield.focus();
	     return false;
		 }
		 
       else if(document.frm.textarea.value=="")
 
             {
               alert("Please enter your coments");
	             document.frm.textarea.focus();
	             return false;
		          }
				  
		 else if(document.frm.textfield2.value=="")
 
             {
               alert("Please enter your telephone number");
	             document.frm.textfield2.focus();
	             return false;
		          }
				  
			
			else if(document.frm.textfield22.value=="")
 
             {
               alert("Please enter your email id");
	             document.frm.textfield22.focus();
	             return false;
		          }	
		  else if((document.frm.textfield22.value!="")&&(!emailReg.test(document.frm.textfield22.value)))
 {
   alert("Invalid email id! Please enter valid email");
     document.frm.textfield22.focus();
	 return false;
	}   
				  
			
				  
			 
 return true;
}